the white house has just informed us president obama called egypt's president today to express what the white house called deep concern over the deadly protests in cairo overnight. the white house says president obama praised the egyptian president mohammed morsi for offering to meet with his opponents this weekend but said that dialogue should come without any preconditions. one opposition group is already turning down that offer. here is how it is going over in cairo. [chanting] shch shep protest hers back on the street this overnight. military sealed off the presidential palace with tanks and bausched wire after the worst violence since president morsi took office in june. [explosions] 700 dead and 600 hurt after battled outside the very presidential palace. police say the two sides threw rocks and fire bombs at each other. the protesters say they are outraged that the president in essence put himself above the law last month. president morsi helped negotiate the cease-fire between israel and hamas he is in charge of enforcing that agreement. tonight he went on egyptian television to